Random system freeze at window operations

Also see Bug #50687 (found it later :/ )

Thank you for reporting this bug in Ubuntu. Could you please test and see if this still occurs in Feisty or newer? Also, please let us know if you know for certain that this is a duplicate of bug 50687.

> Thank you for reporting this bug in Ubuntu. Could you please test and
> see if this still occurs in Feisty or newer?
The problem disappeared after upgrading to Edgy. Since then I changed
computers, so I don't know about Feisty. I think it was
Dapper-specific, because it did not happen before or after.

> Also, please let us know
> if you know for certain that this is a duplicate of bug 50687.
Sounds exactly like my bug, although the guy did not try the things I
did (drm, glx etc). It was surely something with the X, or the ati
driver. But because it seemed to be random, and there were no reports
in log files, it was hard to describe it. So I can not say for certain
that it is the same.

I discussed it in a forum, and some people there had similar
experience with various graphic cards, so it might not be ATI (Radeon)
specific.

Thanks for getting back so quickly. Good to hear that it no longer occurs for you. The bug 50687 is marked fixed, so on the hunch this is a dupe of that, I'm marking this one fixed as well.

Cool! Bug squashed.

Is the closed status based on this comment?
"Well, i think we can close this bug, as it's not happening anymore in
edgy, right?"
Dapper is LTS release, and as such, upgrading to Edgy does not solve
the problems of people in production environment, where they use LTS.
As for myself, I'm content with the "fix".

On 7/18/07, Bryce Harrington <email address hidden> wrote:
> Thanks for getting back so quickly. Good to hear that it no longer
> occurs for you. The bug 50687 is marked fixed, so on the hunch this is
> a dupe of that, I'm marking this one fixed as well.
>
> ** Changed in: xorg (Ubuntu)
> Status: Incomplete => Fix Released
>
> --
> Random system freeze at window operations
> https://bugs.launchpad.net/bugs/62747
> You received this bug notification because you are a direct subscriber
> of the bug.
>

--
|_|o|_| MSN: <email address hidden>
|_|_|o| ICQ: 330898228
|o|o|o| Skype: koopac

Right, if someone in a production environment needs this fix in Dapper LTS, a bug should be opened with a request for backporting the fix.

Solution:
Disable special CPU/motherboard/IO services. I mean: append kernel parameters with this:
acpi = off noapic nolapic
This can be done before booting, but it's the best to create a new, "safe system start" entry in your grub menu (read manual to do this).

For me this always solved the problem, but it was never a complete solution, because other new problems occured:
1. No more wireless LAN support;
2. Ubuntu is no longer able to turn computer off when trying to;
3. USB devices working slower, especially when connecting USB 2.0 device on USB 1.0 port; this means an exponential-slowing-down.

I haven't test it with wired LAN, but it may be affected too. If you can live with these limitations then your system will be atomic-secure and stable, but your system will feel like an old 3.86/4.86 PC in the 90's.

I wonder when this bug will be fixed finally, because I might have given enough informations about the source of the problem in the beginning of this comment (IO/APIC).